Lighting device



FIG. 1 is a front perspective view of a lighting device, showing my design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is a left side view thereof; and,

FIG. 8 is a right side view thereof.

The broken line showing in the drawings is included for the purpose of illustrating portions of the lighting device and forms no part of the claimed design. 

CLAIM The ornamental design for a lighting device, as shown and described. 